Abstract
A three-component aquatic model, which consists of nutrient, phytoplankton and zooplankton has been investigated. To incorporate the effects of higher predation, the mortality of zooplankton is assumed to be density-dependent (sigmoidal form). The system has uniformly bounded and dissipative solutions in the non-negative octant. Some conditions on persistence of all three-species have been established. The parameter estimation technique ”Marquardt-Levenberg (M-L) algorithm” has been used to estimate the values of some parameters, specially for density-dependent mortality. The bifurcation analysis reveals that model has periodic solutions for some parameter range. The amplitude of short term oscillations is varying with nutrient input present in the system. It is consistent with the field observational results. The nutrient input in the system may be one of the reason for short-term oscillations observed in the sea water.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Edwards, A.M., Brindley, J.: Oscialltory behavior in a three-component plankton population model. Dynam. Stablity Syst. 11, 347–370 (1996)
Fasham, M.J.R., Ducklow, H.W., McKelvie, S.M.: A nitrogen-based model of plankton dynamics in the oceanic mixed layer. J. Mar. Res. 48, 591–639 (1990)
Fasham, M.J.R.: Modelling the marine biota. In: Heinmann, M. (ed.) The Global Carbon Cycle, pp. 457–504. Springer, Berlin (1993)
Freedman, H.I., Waltman, P.: Persistence in models of three intercating predator-prey populations. J. Math. Biosci. 68, 213–231 (1984)
Press, W.H., Teukolsky, S.A., Vetterling, W.T., Flannery, B.P.: Numerical Recipes in C, 2nd edn. The Art of Scientific Computing. Cambridge University Press, Cambridge (1992)
Steel, J.H., Henderson, E.W.: A simple plankton model. American Naturalist 117, 676–691 (1981)
Wroblewski, J.S.: An ocean basin scale model of phytoplankton dynamics in the North Atlantic. Solution for the climatological oceanographic condition in May. Global Biogeochem. 2, 199–218 (1988)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Priyadarshi, A., Gakkhar, S., Banerjee, S. (2012). Dynamics of Density-Dependent Closure Term in a Simple Plankton Model. In: Balasubramaniam, P., Uthayakumar, R. (eds) Mathematical Modelling and Scientific Computation. ICMMSC 2012. Communications in Computer and Information Science, vol 283. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28926-2_20
Download citation
DOI: https://doi.org/10.1007/978-3-642-28926-2_20
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-28925-5
Online ISBN: 978-3-642-28926-2
eBook Packages: Computer ScienceComputer Science (R0)